What airlines fly to Illinois?

United Airlines, American Airlines and Delta are the top three most popular airlines that fly to Illinois from Helena according to our data. United Airlines is the first choice among our users, with 48% of people opting to fly with this airline when traveling to Illinois. Keep in mind that there are 4 different airlines that fly to Illinois on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Helena to Illinois?

United Airlines, Delta, and Alaska Airlines are the most popular carriers operating from Helena to Illinois

When did momondo last update prices for flights from Helena Airport to Illinois?

Prices for flights from Helena Airport to Illinois refresh daily.

How old do you have to be to fly from Helena Airport to Illinois?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Helena Airport to Illinois.

What documentation or ID do you need to fly to Illinois?

The necessary travel and health documents for your Illinois trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$225 Cheap Flights from Helena to Illinois in 2025/26

1 adult

0 bags

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Find the cheapest flights from Helena to Illinois

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

4:36 pm - 2:05 pm

HLN

ORD

20h 29m1 stop

7:00 am - 3:59 pm

ORD

HLN

9h 59m1 stop

$337Alaska Airlines

Sat, Feb 14 - Wed, Feb 18

4:36 pm - 12:01 pm

HLN

ORD

18h 25m1 stop

3:54 pm - 3:59 pm

ORD

HLN

25h 05m1 stop

$342Alaska Airlines

Wed, Mar 4 - Fri, Mar 6

4:36 pm - 2:05 pm

HLN

ORD

20h 29m1 stop

7:00 am - 3:59 pm

ORD

HLN

9h 59m1 stop

$347Alaska Airlines

Sat, Feb 14 - Wed, Feb 18

2:27 pm - 8:34 pm

HLN

MLI

5h 07m1 stop

8:46 am - 1:41 pm

MLI

HLN

5h 55m1 stop

$359United Airlines

Sat, Jan 24 - Tue, Jan 27

2:27 pm - 8:34 pm

HLN

MLI

5h 07m1 stop

10:47 am - 9:26 pm

MLI

HLN

11h 39m2 stops

$364United Airlines

Sat, Jan 24 - Tue, Jan 27

6:15 am - 9:36 pm

HLN

MLI

14h 21m2 stops

10:47 am - 9:26 pm

MLI

HLN

11h 39m2 stops

$463United Airlines

Sat, Jan 24 - Tue, Jan 27

2:27 pm - 2:30 pm

HLN

STL

23h 03m2 stops

4:15 pm - 1:41 pm

STL

HLN

22h 26m1 stop

$579United Airlines

Wed, Jan 14 - Sat, Jan 17

5:30 am - 5:37 pm

HLN

MDW

11h 07m2 stops

1:29 pm - 10:27 pm

MDW

HLN

9h 58m2 stops

$619Delta

Wed, Mar 4 - Fri, Mar 6

5:30 am - 6:32 pm

HLN

MDW

12h 02m2 stops

11:21 am - 10:29 pm

MDW

HLN

12h 08m2 stops

$704Delta

Mon, Jan 5 - Fri, Jan 9

5:30 am - 5:19 pm

HLN

MDW

10h 49m2 stops

1:28 pm - 10:29 pm

MDW

HLN

10h 01m2 stops

$1,007Delta

Sun, Jan 4 - Tue, Jan 6

Alaska Airlines flights from Helena to Illinois

Our best Alaska Airlines deals on Helena to Illinois flight tickets

Alaska Airlines

Mar 4

HLN4:36 pmHelena

18h 25m

1 stop

ORD12:01 pmChicago O'Hare Intl

Mar 6

ORD3:54 pmChicago O'Hare Intl

25h 05m

1 stop

HLN3:59 pmHelena

$342

Find similar

Alaska Airlines

Feb 14

HLN4:36 pmHelena

20h 29m

1 stop

ORD2:05 pmChicago O'Hare Intl

Feb 18

ORD7:00 amChicago O'Hare Intl

9h 59m

1 stop

HLN3:59 pmHelena

$347

Find similar

Alaska Airlines

Mar 4

HLN4:36 pmHelena

19h 35m

2 stops

ORD1:11 pmChicago O'Hare Intl

Mar 6

ORD3:54 pmChicago O'Hare Intl

25h 05m

1 stop

HLN3:59 pmHelena

$373

Find similar

United Airlines flights from Helena to Illinois

Our best United Airlines deals on Helena to Illinois flight tickets

United Airlines

Jan 24

HLN2:27 pmHelena

5h 07m

1 stop

MLI8:34 pmMoline Quad-City

Jan 27

MLI8:46 amMoline Quad-City

5h 55m

1 stop

HLN1:41 pmHelena

$359

Find similar

United Airlines

Jan 24

HLN2:27 pmHelena

5h 07m

1 stop

MLI8:34 pmMoline Quad-City

Jan 27

MLI10:47 amMoline Quad-City

11h 39m

2 stops

HLN9:26 pmHelena

$364

Find similar

United Airlines

Jan 24

HLN6:15 amHelena

14h 21m

2 stops

MLI9:36 pmMoline Quad-City

Jan 27

MLI10:47 amMoline Quad-City

11h 39m

2 stops

HLN9:26 pmHelena

$463

Find similar

Fly from

Fly to

Route

Depart

Return

Price

HelenaChicago

HLN - ORD

HLNORD

Helena

Sat 2/14

4:36 pm-2:05 pm

1 stop20h 29m

Chicago O'Hare Intl

Wed 2/18

7:00 am-3:59 pm

1 stop9h 59m

$337

HelenaChicago

HLN - ORD

HLNORD

Helena

Wed 3/4

4:36 pm-12:01 pm

1 stop18h 25m

Chicago O'Hare Intl

Fri 3/6

3:54 pm-3:59 pm

1 stop25h 05m

$342

HelenaChicago

HLN - ORD

HLNORD

Helena

Sat 2/14

4:36 pm-2:05 pm

1 stop20h 29m

Chicago O'Hare Intl

Wed 2/18

7:00 am-3:59 pm

1 stop9h 59m

$347

HelenaMoline

HLN - MLI

HLNMLI

Helena

Sat 1/24

2:27 pm-8:34 pm

1 stop5h 07m

Moline Quad-City

Tue 1/27

8:46 am-1:41 pm

1 stop5h 55m

$359

HelenaMoline

HLN - MLI

HLNMLI

Helena

Sat 1/24

2:27 pm-8:34 pm

1 stop5h 07m

Moline Quad-City

Tue 1/27

10:47 am-9:26 pm

2 stops11h 39m

$364

HelenaMoline

HLN - MLI

HLNMLI

Helena

Sat 1/24

6:15 am-9:36 pm

2 stops14h 21m

Moline Quad-City

Tue 1/27

10:47 am-9:26 pm

2 stops11h 39m

$463

HelenaSt. Louis

HLN - STL

HLNSTL

Helena

Wed 1/14

2:27 pm-2:30 pm

2 stops23h 03m

Lambert-St Louis

Sat 1/17

4:15 pm-1:41 pm

1 stop22h 26m

$579

HelenaChicago

HLN - MDW

HLNMDW

Helena

Wed 3/4

5:30 am-5:37 pm

2 stops11h 07m

Chicago Midway

Fri 3/6

1:29 pm-10:27 pm

2 stops9h 58m

$619

HelenaChicago

HLN - MDW

HLNMDW

Helena

Mon 1/5

5:30 am-6:32 pm

2 stops12h 02m

Chicago Midway

Fri 1/9

11:21 am-10:29 pm

2 stops12h 08m

$704

HelenaChicago

HLN - MDW

HLNMDW

Helena

Sun 1/4

5:30 am-5:19 pm

2 stops10h 49m

Chicago Midway

Tue 1/6

1:28 pm-10:29 pm

2 stops10h 01m

$1,007

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Helena to Illinois

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the cheapest day to depart on your flight to Illinois?

The cheapest day to depart from Helena to Illinois is on a Wednesday when prices can be found for as low as $680. Flights from Helena to Illinois on a Monday will generally be more expensive and average around $780. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Illinois?

Our most recent data shows that the best time of day to fly to Illinois is at noon. Flights from Helena to Illinois during this time can be as low as $620. Flights in the morning are often more expensive with an average ticket price of $708.

Cheap Helena to Illinois flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Helena to Illinois

Fastest flight time	5h 07m
Direct flights	None

The fastest flight from Helena to Illinois takes 5h 07m

There are no direct flights from Helena to Illinois. There are no popular flight routes from Helena to Illinois.

Search flight deals

When did momondo last update prices for flights from Helena Airport to Illinois?
Prices for flights from Helena Airport to Illinois refresh daily.
How old do you have to be to fly from Helena Airport to Illinois?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Helena Airport to Illinois.
What documentation or ID do you need to fly to Illinois?
The necessary travel and health documents for your Illinois trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Why use momondo?

Why should I use momondo to find a flight deal from Helena to Illinois?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Helena to Illinois for you.

Can I find flights from Helena to Illinois with flexible booking policies on momondo?

Yes. All flights to Illinois from Helena on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Helena to Illinois?

momondo helps you find the best flight between Helena and Illinois by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Helena to Illinois right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Illinois from Helena. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.